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BMW E30 Street/TimeAttack (DTM style control arms)

Posted: 11 Apr 2013, 12:25
by Miuge
Hi everybody!

Me and two friends of mine started a team called Magnus Racing a few years ago, now it's time to make it more official.
We lived in the same city in Finland and we still have our garages down there. Everyone has their own car to build, aim is to go faster without looking bad.

Like us on Facebook to see those other projects and more updates:
http://www.facebook.com/magnusracingteam

This thread is for my BMW E30 built to streetlegal TimeAttack racer.

Everything started from this, orginal BMW 320i 1987:
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In few months I had bought and done a lot of stuff and car looked like this:
18" wheels http://i187.photobucket.com/albums/x281 ... asa007.jpg
D2 coilovers and 325i disc brakes http://i187.photobucket.com/albums/x281 ... aan011.jpg
Headers http://i187.photobucket.com/albums/x281 ... C03164.jpg
Typ188 differential http://i187.photobucket.com/albums/x281 ... ivusta.jpg
Powerflex bushes http://i187.photobucket.com/albums/x281 ... saa006.jpg
Sparco seat and Momo wheel http://i187.photobucket.com/albums/x281 ... taa002.jpg

By that time I had made all the chassis work to make it rust free, good subject to start a bigger project.

BMW was hold in the garage for few years and I only scraped some stuff together:
M30 engine http://i187.photobucket.com/albums/x281 ... rsu007.jpg
E36 M3 spindles http://i187.photobucket.com/albums/x281 ... uva141.jpg
Had a cheap coilover kit http://i187.photobucket.com/albums/x281 ... s09009.jpg
E34 M5 rear axle http://i187.photobucket.com/albums/x281 ... G_4774.jpg

Recent years I've done more or less, at least I've tried ;)
First fitting for the engine http://i187.photobucket.com/albums/x281 ... G_4937.jpg
Something was missing http://i187.photobucket.com/albums/x281 ... G_5396.jpg
Looking better http://i187.photobucket.com/albums/x281 ... G_6414.jpg
Twin charging components http://i187.photobucket.com/albums/x281 ... 000622.jpg
E46 steering rack http://i187.photobucket.com/albums/x281 ... 000849.jpg
6-speed ZF http://i187.photobucket.com/albums/x281 ... 000975.jpg
Test wheels 10x17" http://i187.photobucket.com/albums/x281 ... 3ff646.jpg
Roll cage work in progress http://i187.photobucket.com/albums/x281 ... a3afad.jpg
Battle of axles E30 vs. E34 http://i187.photobucket.com/albums/x281 ... 501abc.jpg
Pedalbox fitted http://i187.photobucket.com/albums/x281 ... e0e5dc.jpg
Seat and steering wheel re-located http://i187.photobucket.com/albums/x281 ... 05feeb.jpg

Image

All pictures can be found from photobucket:
http://s187.photobucket.com/user/mice32 ... ry/?page=1
Highlights from garaget.org:
http://www.garaget.org/?car=291564
Our team facebook page:
http://www.facebook.com/magnusracingteam

Thanks for watching, more updates coming soon!
Också fattar och skriver lite svenska, men allt i Facebook ska skrivas på engelska! :D

Re: BMW E30 Street/TimeAttack

Posted: 17 Apr 2013, 19:51
by Miuge
Got BBS RF wheel centres today, they're from 8x17" ET40 wheel:
Image

Fitted them to my friend's car which has 325mm discs with Wilwood Superlite calipers, needed 15mm spacer to fit.
I'm planning to buy same discs (E46 M3) and Cayenne/Touareg 6-piston calipers in front. There won't be too much space:
Image


Also made little room to rear seat area so I can make the new shock towers.
From this:
http://i187.photobucket.com/albums/x281 ... 1ce5f7.jpg
To this:
http://i187.photobucket.com/albums/x281 ... 6a4d8c.jpg

Re: BMW E30 Street/TimeAttack

Posted: 20 Apr 2013, 10:35
by Miuge
I had to make more room for the rear axle as it didn't fit as high as I wanted, next step is to modify body beams if that's not enough.
Otherwise there would be problems with trailing arm and output shaft angles with desired drive height.

Image
http://i187.photobucket.com/albums/x281 ... 55d59a.jpg

New plate allowing even more lift of the axle if needed, now there's about 4cm space above the carrier:
Image

Re: BMW E30 Street/TimeAttack

Posted: 22 Apr 2013, 17:58
by Miuge
Today postman brought this quick release/snap off hub for steering wheel, it would have been very hard to climb in and out of the car when the rollcage is finished with the door X-brace.

Image

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Now I'm waiting my custom K-Sport coilover kit, it's based on the Circuit -model, but customized at the factory to my needs.
Front coilovers are E36 M3 type and rears E34 type which are a lot shorter than E36 or E30 shock.
They should arrive soon.. :P

Re: BMW E30 Street/TimeAttack

Posted: 26 Apr 2013, 15:17
by Miuge
Coilover order came today, thanks for K-Sport Finland for an easy and fast transaction!

Looking good :cool:

Image
http://i187.photobucket.com/albums/x281 ... 93b91b.jpg

Image

I need to design topmounts to the front with 4-bolt fastening, which allows me to make caster adjustment into the chassis. Also rear end topmounts need a little bit of modifying, thinking of spherical bearing instead of solid mounting.

Now I got all the parts to finish the rollcage, lot's of work on the way!

Re: BMW E30 Street/TimeAttack

Posted: 02 May 2013, 19:39
by Miuge
Started with the front end last weekend, now it starts to take form.

This was the beginning, only showing approximate location of the top:
http://i187.photobucket.com/albums/x281 ... 1746c7.jpg

Took this picture today, other half almost ready:
Image
And another:
http://i187.photobucket.com/albums/x281 ... 86b427.jpg

Placing of the roll cage tube:
Image

Also made a 3D model of the front top mount, just needs to be machined:
Image

Sv: BMW E30 Street/TimeAttack

Posted: 03 May 2013, 15:00
by johankihl
Why not make the top monts adjustable in caster aswell?

Re: BMW E30 Street/TimeAttack

Posted: 03 May 2013, 22:12
by Miuge
Caster adjusment will be made like this with longish holes, that's why I'm not using 3-bolt top mounts:
Image

Little ride height testing again, it will still lower a few centimeter:
Image

Re: BMW E30 Street/TimeAttack

Posted: 04 May 2013, 08:56
by jfrostdahl
hieno projekti :) mistäpäin sä oot?

Re: BMW E30 Street/TimeAttack

Posted: 13 May 2013, 10:57
by Miuge
Täällä Tampereen seudulla värkkäillään :)

Started with the rear end, but ended up to cut a lot metal off.. Pics coming soon.

Designing the shock tower:
Image

Finally found the brake calipers in affordable price. Porsche Cayenne Brembos 6- and 4-piston calipers:
Image

And E46 M3 front discs:
Image

Re: BMW E30 Street/TimeAttack

Posted: 18 May 2013, 22:20
by Miuge
More cutting, hopefully tomorrow adding new plate:

Image

Re: BMW E30 Street/TimeAttack

Posted: 20 May 2013, 19:52
by Miuge
Almost there..
Axle is now 5cm higher than orginal mounts would allow, that should (must) be enough. Only need to cover the holes with sheet metal, piece of cake 8)

Image

Re: BMW E30 Street/TimeAttack

Posted: 24 May 2013, 21:47
by Miuge
Massive brakes :?: Guess does the caliper fit with the E36 king pin? Nope, needs "a little" modification too :roll:

Image

Compared to 1,5liter bottle:
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Re: BMW E30 Street/TimeAttack

Posted: 24 May 2013, 23:25
by Ripper
Nice work, keep posting pics :mrgreen:

Re: BMW E30 Street/TimeAttack

Posted: 25 May 2013, 03:37
by iViLe
I have found out that a 1 Series 135i 6 piston caliper, will bolt upto a e36 m3 spindle with a small spacer to center it on the rotor, I used an e46 330i rotor with it on my e30 project.

Re: BMW E30 Street/TimeAttack

Posted: 25 May 2013, 19:47
by Miuge
iViLe wrote:I have found out that a 1 Series 135i 6 piston caliper, will bolt upto a e36 m3 spindle with a small spacer to center it on the rotor, I used an e46 330i rotor with it on my e30 project.
Yes I've also heard about that, but those seem to be pretty rare and expensive, way more expensive what I paid of my set of Porsche calipers :)
Well, still could keep on looking if someone is selling BMW ones cheap, I've got things to do before fitting the brakes..

Re: BMW E30 Street/TimeAttack

Posted: 03 Jun 2013, 18:32
by Miuge
Not much progress with the car last days due to working all day, but I have to try this week. And next week we'll go to Gatebil Mantorp, as usual 8)

But, I've done little modeling and measuring in my 'billet steel rocker arm' project. Bought a new orginal rocker arm and got it measured at job.
Image

Maybe we'll get something like this:
Image
http://i187.photobucket.com/albums/x281 ... 8bc6be.jpg

Also bought a new fuel cell, 60liter JAZ, which will be placed just about down there:
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Check out our facebook page, there should be some updates of BMW E21 project soon :roll: